Application Architect / Technical Lead – Belgium (Hybrid)

HIVE-X; Brussel Hoofdstad; Hybride; EUR 65 000 - 90 000; Plein temps

Résumé du poste

HIVE-X is seeking an Application Architect / Technical Lead to design, implement and govern complex systems for the Wallonia-Brussels Federation. You will collaborate with analysts, testers and middleware specialists, ensuring high-quality deliverables and best practices across the team.

The role requires strong Java/Spring expertise and frontend Angular knowledge. The mission operates in an Agile/Scrum environment with a service-oriented architecture, and requires 50% on-site presence in

Qualifications

• Expert level in Java, Spring and JPA architecture and implementation.
• Strong REST/OpenAPI design and testing with JUnit/Mockito.
• Experience with DB2, MySQL, Docker-based CI/CD and modern frontend (Angular).

Responsabilités

• Create and maintain software architecture documents and technical designs.
• Lead development teams, ensure code quality, performance and timely deliveries.
• Drive refactoring, debt reduction and adherence to standards across the stack.

Connaissances

Application Architect

Java

Spring / Spring Boot / JPA

REST / OpenAPI

JUnit / Mockito

DB2 / MySQL

CI/CD deployment – Docker

Angular 21 / Material

Flyway

Scrum

IndexedDB / Dexie / Service Worker

French

Description du poste

IT operator of the Wallonia-Brussels Federation. As a public-interest body, it designs, develops, maintains and evolves the information systems and technology infrastructure serving the administrations and institutions of the Federation. A central player in the digital transformation of the French-speaking Belgian public sector, it works on IT infrastructure (networks, security, data centres, cloud), custom business applications, digital project support (functional analysis, UX/UI, project management), cybersecurity and data protection, and user support and training.

As part of the ZEPHYR programme of the Office de la Naissance et de l’Enfance (ONE), the Application Architect / Technical Lead covers application architecture proposals, development, technical expertise and the design of solutions for complex systems. You are responsible for implementing the solution, code quality and technical consistency, performance and product deliveries. Working with functional and business analysts, testers, the project manager and middleware specialists, you own the quality of the deliverables and spread design and development best practices across the team.

• DOMES V2 – supports the follow-up of children aged 0 to 6: ONE professionals manage and edit the child’s record, create consultations and schedule appointments in the Agenda.
• Prenatal V1 – digitalises the social record of expectant mothers, supporting ONE professionals in their social follow-up throughout their journey.
• e-VAX 2.0 – replaces the current e-VAX CCR solution and modernises vaccination data management: better collection and exchange of vaccine data, a cross-cutting vaccination card, vaccine supply-chain tracking, and data-driven decision support for the vaccination programme.

The mission takes place in an Agile / Scrum environment with a service-oriented architecture. Tech stack: Angular 21, NgRx, Java 8 / JEE 7, Java 21, Spring Boot, DB2, MySQL, Flyway. Build tools: Apache Maven, Git / GitLab CI/CD, Nexus.

Design

• Create and maintain the software architecture document.
• Produce the technical design and analysis based on the functional specifications.
• Define and enforce development best practices: clean code, SOLID, DRY, etc.

Development

• Act as technical expert for the development team.
• Develop application modules.
• Optimise code for memory management and response times.
• Organise refactoring to simplify existing code.
• Validate developments and unit tests.
• Perform corrective and evolutive maintenance.

Deployment

• Validate deployment and delivery of the solution.
• Ensure the application behaves correctly across all runtime environments.

Quality

• Ensure the team’s developments meet enterprise standards.
• Apply and enforce methodological and technological standards.
• Ensure deadlines are met.
• Drive technical-debt reduction (clean code, library and framework upgrades).
• Coach and mentor the developers under your technical responsibility.

Communication

• Communicate with all stakeholders involved in delivering the work packages and give regular feedback to the team leader.
• Assist the team leader in qualifying and estimating work packages.

Consultants work under the same conditions as internal staff: hybrid mode with a mandatory minimum of 50% on-site presence. The mission is conducted exclusively in French.

Required Skills

Application Architect (Expert), Java (Expert), Spring / Spring Boot / JPA (Expert), REST / OpenAPI (Expert), JUnit / Mockito (Expert), DB2 / MySQL (Expert), CI/CD deployment – Docker (Expert), Angular 21 / Material (Confirmed), Flyway (Confirmed), Scrum (Confirmed), IndexedDB / Dexie / Service Worker (Junior), French (Native)

Practical Information

• Location: Brussels – Hybrid (min. 50% on-site)